A mother and father were jailed Sunday in Jefferson Parish after authorities said they found them passed out on heroin in a car in Metairie with their two young sons.

The couple, Michael Pierce, 41, and Melanie Pierce, 34, who were found near the intersection of Veterans Memorial and Bonnabel boulevards, face charges that include endangering a child, having drugs and paraphernalia in the presence of a child and possession of heroin, according to the Jefferson Parish Sheriff's Office.

Their children, aged 4 years and 11 months, were taken to a local hospital, but apparently have suffered no injuries, said Col. John Fortunato, a spokesman for the sheriff's office. The children were then released to their grandparents, the sheriff's office said.

The parents, both of Alder Lane in Denham Springs, had a bad reaction to the heroin. Officials said it is not clear when the parents did the drugs, police said.

The sheriff's office said it was called after people became alarmed when they saw the man and woman passed out in their parked car.

According to the sheriff's office, the parents said they have a $200-a-day heroin habit.